Ten years ago, the richest person on Earth couldn’t buy a device that does what the iPhone does. Today, anyone can get one free upon signing a two-year carrier contract. Entry-level cars are vastly better in amenities and reliability than your father’s Cadillac decades ago.

Lifesaving and life-changing medicines and therapies once unknown are now commonplace. Food costs a fraction of what it once did. TV viewers used to have three channels to choose from. Now they have hundreds.